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My fellow Erfworlders, I am not a cwook.


A ruler is the leader of a side in Erfworld.

A ruler with royal lineage is typically called a King/Queen or Emperor/Empress. A ruler without royal ancestry is often called an Overlord. A non royal ruler with a royal heir is called a regent.

The ruler has absolute power over his units. He literally can end them with a thought. All subjects are forced to serve his will due to Natural Thinkamancy. The ruler decides what cities produce, can promote units to warlords, and can designate an heir. The ruler appoints the Chief Warlord, but can command his Side's units if necessary.

Becoming a Ruler

A barbarian commander unit who seizes a capital city or builds a new city on a capital site will found a new side and become its ruler.

An heir will become ruler of a side immediately upon the ruler croaking or abdicating. If the new ruler's side owns at least one city, then the side continues as before. If it has no uncontested cities of its own, then the side falls and the would-be ruler becomes a barbarian.

End of Rule

A ruler's rule ends when they die, turn to another side, or abdicate their rule.

A ruler whose rule ends without an heir causes their side to fall. Cities become neutral, and freeze in time. Units left in those cities do not experience turns, and cannot act unless the city is attacked. Units in the field disbandErf-b1-p098bSame-site.PNGErf-b1.5-p043Same-site.PNG. However, units in the Magic Kingdom instead become Barbarians.

The same can occur if a ruler with no heir becomes a prisoner, however the units of the side still have the remainder of that Turn to attempt repatriating the ruler.Book of Patches Once that turn is over though (when all side's units running out of Move or a natural end of turn comes), the cities become neutral, units in the field disband, etc. This is not, however, a complete End of Rule, as the ruler can still escape, be repatriated or freed later and the side will resume, albeit without the units that disbanded.

Ruler Senses

Ruler sense is a form of Natural Thinkamancy that allows them to know the exact number of units on their sideIPTSF Text 25, where they are, and their pointsIPTSF Text 26. It has been shown that a ruler can know where their Chief Warlord isErf-b2-pT49Same-site.PNG. This does not apply to natural allies, however.IPTSF Text 45

Proposed Canon

Both Warlords and Casters can become Rulers (by founding a new side or by being the heir when the previous Ruler croaks). It is unknown if it's possible for other unit types.

Known Rulers and their Heirs



Gobwin Knob



  • Ruler: Caesar Borgata, former Chief Warlord and Viscount of Vitalis.
  • Don King (former King, succeeded King County at the age of 15 turns, croaked)
  • King County (former King, croaked, father of Don)
  • Corso the Dog (former King, croaked)
  • previous heir:Ponzie, prince, son of Don King, disbanded as a result of an attempted coup against Don King
  • previous heir: princess, unnamed daugher of Don King, croaked
  • potential Royal heir in production, but not yet popped.





Confusion on the name of this position came from Parson learning facts incrementally. Initially, he was mostly familiar with Stanley, an Overlord, so Klog 5 referred to Overlords. Later, he apparently learned that Overlords are Rulers that are not Royal, and so the more general term Ruler is introduced in Klog 10. This change in terminology gave the impression that the two terms were synonymous. Rob Balder has confirmed that Ruler is the correct term, and that Overlord is merely a Ruler that is not Royal.


The Heir of a side is usually the Chief Warlord and vice-versa. From the known heirs, most were also known to serve as their side's Chief Warlord at one point or another. It is not known whether or not Princess Cruz or Don King ever served as Chief Warlord, but given the circumstances under which he was popped, the latter probably did not.

It is worth noting That Jillian and Ansom were popped as heirs and Ansom was later (possibly immediately, possibly only after gaining a certain number of levels) promoted to Chief Warlord; which means for a time, at least a portion of one turn, possibly many turns, the Chief Warlord was not the Heir.

Conversely, Stanley was promoted to Chief Warlord first and then after a while was promoted to Heir, due to his victories with dwagons. Had King Saline IV popped an Heir instead, as is common, he likely would not have made that Heir his Chief Warlord - at least not right away.

Wanda Firebaugh was not popped as an Heir and was not initially Chief Caster of her side. She was eventually promoted to both positions. She is also an interesting case because she was the first caster confirmed to have ever been either an Heir or a Ruler. All Rulers and Heirs previously known had been Warlords, though other caster rulers have been revealed since then, such as Charlie, Olive Branch, Bell, and Blair. It is as yet unknown whether other unit types can become rulers.

It makes sense to combine the two positions: a chief warlord is the second most important unit of a side and has a lot of influence in military and diplomatic strategic and acts in many ways as replacement for the Ruler. Also the chief warlord is by definition and natural Thinkamancy the most loyal person and therefore least likely to plan regicide.

However, Chief Warlord is an appointed position, and any Commander can be given the job. Strategically speaking, the best choice is the person with the best mind for tactics, and/or the highest Leadership bonus, since his bonus extends further than anyone else's.

Acquiring an Heir is in general extremely expensive, either in Shmuckers (Heir Designate) or in production (Heir).